Moderate -0.3 This is a straightforward logarithm equation requiring application of standard log laws (power rule and subtraction rule) to simplify the right side to ln(x³/3), then equating arguments to get x³ - 3 = x³/3, leading to a simple linear equation. Slightly easier than average due to the algebraic simplification being routine, though students must recognize the correct approach.
Obtain a correct equation free of logarithms, e.g. 3 x3 −3 = x3
A1
Obtain x = 1.65
A1
3
Answer
Marks
Guidance
Question
Answer
Marks
Question 1:
1 | Use law of the logarithm of a product or power | M1
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Obtain a correct equation free of logarithms, e.g. 3 x3 −3 = x3 | A1
Obtain x = 1.65 | A1
3
Question | Answer | Marks | Guidance